html, body {
	height: 100%;
	overflow: hidden;
}

body {
	background: #222;
	margin: 0;
	padding: 0;
	position: relative;
}

button {
	appearance: none;
	background: transparent;
	border: 0;
	bottom: 0;
	box-sizing: border-box;
	cursor: default;
	height: 100%;
	left: 0;
	opacity: 0;
	position: fixed;
	right: 0;
	top: 0;
	width: 100%;
	z-index: 100;

}

canvas {
	left: 50%;
	position: absolute;
	top: 50%;

	-webkit-transform: translate(-50%, -50%);
	-ms-transform: translate(-50%, -50%);
	transform: translate(-50%, -50%);

	/* http://stackoverflow.com/questions/14068103/disable-antialising-when-scaling-images */
	image-rendering: optimizeSpeed;
	image-rendering: -moz-crisp-edges;
	image-rendering: -o-crisp-edges;
	image-rendering: -webkit-optimize-contrast;
	image-rendering: pixelated;
	image-rendering: optimize-contrast;
	-ms-interpolation-mode: nearest-neighbor;

}